All,
Horizontal grouping shows good elevation and poor trigger control. Possible causes are:
1. High right shoulder
2. High vertical position
3. Jerking the trigger
4 .Varying head pressure
5. Movement of the right elbow
6. No stability of position
7. Change in sight picture
8. Failure to maintain proper sight alignment
Shooter errors, such as moving the rifle, not countering for the effects of wind and weather, or poor sight alignment, as well as errors caused by a broken rifle or defective ammunition can be recognized by logical troubleshooting. This is called shooter/target analysis. One method of analysis is appraisal of the call/strike corollary. From it, error from wind, or movement of the gun can be easily discerned. For example, beginning with a properly zeroed rifle for a no-wind condition, a shot called right-in-there but striking left or right of call would indicate not correctly countering for the effect of wind. A shot on call but striking someplace other than where desired would indicate movement of the rifle.
It appears that most shooters do not have any understanding about how to analyze their shots; thus, they suffer to become the really good shooters they're aspiring to be. In competition or practice, these shooters will not be able to make the most of their work in progress; and worse, they may develop muscle memory which could undermine their results.
Without a coach, and without any clue about shooter/target analysis a shooter may still get off to a good start by concentrating on the fundamentals while executing the two firing tasks; but, at some point, the shooter who learns something about shooter/target analysis will hasten desired results.
